43. Weaving in arc welding refers to
A.Side to side motion of electrode at right angles to the direction of the welding
B.Side to side motion of electrode along the direction of the welding
C.Spiral motion given to electrode
D.A technique of striking the arc
44. The main criterion for selection of electrode diameter in arc welding is
A.Material to be welded
B.Type of welding process
C.Thickness of material
D.Voltage used
45. Weld spalter is
A.Flux
B.Electrode coating
C.Welding defect
D.Welding test
46. Arc blow occurs in
A.Gas welding
B.Gas cutting
C.Arc welding when straight polarity is used
D.Arc welding when reverse polarity is used
47. Low hydrogen electrodes are baked prior to use in order that
A.Proper strength in obtained
B.Welding is free from arc blow
C.Welding is free from moisture pick up
D.Current required is minimum
48. Gray iron is usually welded by
A.Gas welding
B.Arc welding
C.Resistance welding
D.TIG welding
49. Stud and projection welding belong to the following category of welding
A.Gas welding
B.Arc welding
C.Resistance welding
D.Pressure welding
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